B&R 7AT664.70数字量输出模块，7AT664.70使用过程

MVME172LX安装了172Bug固件。对于固件要与电路板一起正常工作，必须遵循以下步骤在下面在通电的情况下插入或卸下电路板可能会损坏电路板组件。1、关闭所有设备电源。参考MVME172LX第1-4页的配置和标题上的跳线配置为对于您的特定应用程序是必要的。a、 标头J21的跳线块包含八个位，它们都是影响Bug操作。它们作为寄存器读取（在位置$FFF4202D）。

B&R 7AT664.70数字量输出模块（MVME172 VME嵌入式控制器程序员参考指南包含有关MC2chip的其他信息。）当对应的跳线为时，位值读取为0已安装，或在拆下跨接导线时为1。MVME172LX上J21的默认配置为安装了七条跳线（针脚9-10之间没有跳线）。172Bug固件保留/定义四个低阶位（GPI3到GPI0）。表2-2描述了J21上的位分配。b、 通过在两个接头之间安装/拆卸跨接导线来配置收割台J1针脚1和2。安装/拆除跳线可启用/禁用MVME172LX上的系统控制器功能。2.有关详细信息，请参阅特定机箱或系统的设置程序有关MVME172LX安装的详细信息。3、连接用作系统的终端控制台上的串行端口1处的默认调试EIA-232-D端口MVME172LX的前面板。请参阅中的串行连接第1章了解其他连接选项。将终端设置为跟随：–每个字符8位–每个字符一个停止位–奇偶校验禁用（无奇偶校验）–波特率9600波特（MVME172LX端口的默认波特率通电时）通电后，您可以重新配置调试端口的波特率通过使用172Bug端口格式（PF）命令。

The MVME172LX comes with 172Bug firmware installed. For the

firmware to operate properly with the board, you must follow the steps

below. Inserting or removing boards with power applied may damage

board components.

1. Turn all equipment power OFF. Refer to MVME172LX

Configuration on page 1-4 and configure jumpers on headers as

necessary for your particular application.

a. The jumper block for header J21 contains eight bits, which all

affect 172Bug operation. They are read as a register (at location

$FFF4202D) on the MC2chip ASIC. (The MVME172 VME

Embedded Controller Programmer’s Reference Guide contains

additional information on the MC2chip.)

The bit values are read as a 0 when the corresponding jumper is

installed, or as a 1 when the jumper is removed.

The default configuration for J21 on the MVME172LX has

seven jumpers installed (no jumper between pins 9-10).

The 172Bug firmware reserves/defines the four lower order bits

(GPI3 to GPI0). Table 2-2 describes the bit assignments on J21.

b. Configure header J1 by installing/removing a jumper between

pins 1 and 2. A jumper installed/removed enables/disables the

system controller function on the MVME172LX.

2. Refer to the setup procedure for your particular chassis or system for

details concerning the installation of the MVME172LX. 3. Connect the terminal that is to be used as the 172Bug system

console to the default debug EIA-232-D port at serial port 1 on the

front panel of the MVME172LX. Refer to Serial Connections in

Chapter 1 for other connection options. Set the terminal up as

follows:

– Eight bits per character

– One stop bit per character

– Parity disabled (no parity)

– Baud rate 9600 baud (default baud rate of MVME172LX ports

at powerup)

After power-up, you can reconfigure the baud rate of the debug port

by using the 172Bug Port Format (PF) command.